List of California hurricanes explained

Since 1854, at least 100 tropical cyclones affected the U.S. state of California, including a hurricane in 1858 that produced hurricane-force winds near San Diego. This averages to roughly once a year, although events are more likely during El Niño events. Although storms have occurred as early as June and as late as October, they are most likely during the month of September. Due to cold sea surface temperatures and the typical track of most Pacific hurricanes, there has only been one recorded landfall of a tropical storm in the state  - a storm in 1939 that hit Los Angeles, killing 45 people after catching many residents off guard. There have been at least 13 other deadly tropical cyclones affecting California.

Typically, the greatest threat from tropical cyclones is rainfall, which can cause flash flooding when the precipitation accumulates quickly enough. Former Hurricane Kathleen in 1976 produced 14.76inches of rainfall along Mount San Gorgonio, which was the highest precipitation in California related to an Atlantic or Pacific hurricane. Kathleen killed at least nine people in the state from heavy rainfall, with severe flooding affecting the city of Ocotillo. On some occasions, tropical cyclones have dropped the equivalent to a year's worth of rainfall, particularly in the deserts of southern California.

California occasionally experiences high surf and rip currents from distant but powerful hurricanes, such as Hurricane Guillermo in 1997, which killed a swimmer in Orange County. Although the state does not usually suffer from high winds, there have been eight tropical cyclones that have brought gale-force winds to California since 1850, including the hurricane of 1858 and the 1939 tropical storm. Those include the remnants of Tropical Storm Jennifer-Katherine in 1963, Hurricane Emily in 1965, and Hurricane Joanne in 1972. Tropical Storm Nora in 1997 entered the state, producing gale-force winds and heavy rainfall that led to four traffic deaths. The remnants of Hurricane Kay in 2022 produced flooding and wind gusts across southern California, killing one person. In August 2023, the remnants of Hurricane Hilary produced winds along with heavy rainfall, with floods killing one person.

Climatology and warnings

The state of California rarely experiences Pacific hurricanes for various reasons. Typically, storms in the region move to the west or northwest, away from the North American mainland and out to sea. In addition, much of the coast of California experiences cold sea surface temperatures due to the California Current. As a result, the temperatures in the summer rarely rise above 24 °C (75 °F) in southern California, too cold to sustain intense tropical cyclones, and much cooler than the same latitude along the United States Atlantic coastline.[1] Consequently, the primary threat from tropical cyclones in the region is not from winds, but from rainfall and flash floods. Occasionally, these storms enter southern California after making landfall along Mexico's Baja California peninsula, or otherwise in their dissipating stage. In other instances, an mid-latitude trough can draw moisture from a distant tropical cyclone. Northern California is rarely affected by tropical cyclones.[2]

Roughly once a year, tropical cyclones affect the southwestern United States.[2] The frequency of events increases during El Niño events, such as 1932, 1939, 1972, 1976, 1982, and 1997. A record four tropical cyclones affected the state in September 1939, which set monthly precipitation records across the region. Included among the four was including the most recent tropical storm to make landfall in the state.[3] Although tropical cyclones have affected the state between June and October, September is the month with the most events, which is when storms can be drawn northward by strong upper-level troughs.[2]

Until around 1920, the United States Weather Bureau did not acknowledge the eastern Pacific Ocean as a tropical cyclone basin. After the unexpected 1939 Long Beach tropical storm, the weather bureau set up a forecast office for southern California in February 1940. Before 1965, the lack of satellite imagery meant that some tropical cyclones that affected the region were undetected.[3] In the event a tropical cyclone threatens the state, the National Hurricane Center (NHC) issues a variety of advisories and bulletins, including tropical cyclone warnings and watches. The NHC can issue these advisories at one of seven locations along the Pacific coast, known as breakpoints, beginning at the Mexico–United States border, and continuing northward to Point Piedras Blancas.[4] The first ever tropical storm watch or warning for the state was in 2023 during Hurricane Hilary.

List of tropical cyclones

Hurricanes that affect California are mainly the remnants of hurricanes or tropical storms. In the twentieth century, only four eastern Pacific tropical cyclones have brought tropical storm-force winds to the Continental United States: the 1939 Long Beach Tropical Storm, Tropical Storm Joanne in 1972, Tropical Storm Kathleen in 1976, and Tropical Storm Nora in 1997.[5]

Pre–1900

1900 - 1909

1910s

1920s

1930s

1940s

1950s

1960s

1970s

1980s

1990s

2000s

2010s

2020s

Climatological statistics

Most tropical cyclones impacting California do so in the month of September. September 1939 was "unprecedented" in having four tropical cyclones impact the state.[3]

Deadliest storms

The following is a list of all known tropical cyclone-related deaths in California.

NameYearNumber of deaths
1939 45 - 93
1932 15
1976 11
1977 4
1978 4
1983 4
1997 4
1987 3
2009 3
2001 2
1984 1
1997 1
2014 1
2015 1
2015 1
2018 1
2022 1
2023 1

See also

References

Bibliography

External links

Notes and References

  1. Web site: Hurricanes Frequently Asked Questions. June 1, 2023. National Oceanic and Atmospheric Administration. May 18, 2024. September 1, 2023. https://web.archive.org/web/20230901040902/https://www.aoml.noaa.gov/hrd-faq/#west-coast-hurricanes. live.
  2. 1985 - 1998 Eastern North Pacific Tropical Cyclones Impacting the Southwest United States and Northern Mexico: An Updated Climatology. January 1999. Armando L. Garza. National Oceanic and Atmospheric Administration. 2024-05-19. 2017-02-01. https://web.archive.org/web/20170201202356/https://www.weather.gov/media/wrh/online_publications/TMs/TM-258.pdf. live.
  3. A History of Significant Weather Events in Southern California. February 2023. San Diego National Weather Service. May 18, 2024. May 10, 2023. https://web.archive.org/web/20230510174003/https://www.weather.gov/media/sgx/documents/weatherhistory.pdf. live.
  4. Web site: Hurricane and Tropical Storm Watch/Warning Breakpoints. March 2024. May 29, 2024. National Hurricane Center. May 15, 2024. https://web.archive.org/web/20240515224549/https://www.nhc.noaa.gov/breakpoints/. live.
  5. Web site: The San Diego Hurricane of October 2, 1858. Christopher Landsea & Michael Chenoweth. American Meteorological Society. Bulletin of the American Meteorological Society. 1689. November 2004. 2007-12-26. 2012-09-04. https://web.archive.org/web/20120904191216/http://www.aoml.noaa.gov/hrd/Landsea/chenowethlandsea.pdf. live.
  6. Web site: Tropical Cyclones in the Northeast Pacific, Between Hawaii and Mexico. Stephen S. Visher. Monthly Weather Review. American Meteorological Society. 296. June 1922. 2007-12-26. 2007-11-29. https://web.archive.org/web/20071129133043/http://docs.lib.noaa.gov/rescue/mwr/050/mwr-050-06-0295.pdf. live.
  7. https://www.weather.gov/wrh/Climate?wfo=lox
  8. Smith . Walter . The Effects of Eastern North Pacific Tropical Cyclones on the Southwestern United States . National Oceanic and Atmospheric Administration . August 22, 2019 . Salt Lake City, Utah . August 1986 . October 20, 2020 . https://web.archive.org/web/20201020022346/https://www.weather.gov/media/wrh/online_publications/TMs/TM-197.pdf . live .
  9. Gunther, Emil B . 105. 1977. Eastern Pacific Tropical Cyclones of 1976. Monthly Weather Review. American Meteorological Society. 508–522. 10.1175/1520-0493(1977)105<0508:EPTCO>2.0.CO;2. 4. 1977MWRv..105..508G . free.
  10. Web site: Maximum Rainfall caused by North Atlantic & Northeast Pacific Tropical Cyclones and their remnants per state (1900-2023). Weather Prediction Center. GIF. 2024-05-19. 2024-04-29. https://web.archive.org/web/20240429181347/https://www.wpc.ncep.noaa.gov/tropical/rain/tcstatemaxima.gif. live.
  11. Web site: Flood Damage in the United States, 1926–2000 A Reanalysis of National Weather Service Estimates. 23. Roger A. Pielke, Jr.. Mary W. Downton. J. Zoe Barnard Miller. University Corporation for Atmospheric Research. 2024-05-20. 2024-05-20. https://web.archive.org/web/20240520050910/https://www.ltrr.arizona.edu/~katie/kt/FLOODS-USGS/NSF-AHIS/FLOOD-Papers/flooddamagedata.pdf. live.
  12. Monthly Weather Review. Emil B. Gunther. July 1979. Eastern North Pacific Tropical Cyclones of 1978. 107. 7. 911 . American Meteorological Society. 10.1175/1520-0493(1979)107<0911:ENPTCO>2.0.CO;2. 1979MWRv..107..911G . free.
  13. News: Tulare Advance-Register. September 7, 1978. Snow kills four: Twenty-six hikers rescued from frigid High Sierra by helicopter. 1. May 20, 2024. May 20, 2024. https://web.archive.org/web/20240520050910/https://cdnc.ucr.edu/?a=d&d=TULAR19780907.1.1&e=-------en--20--1--txt-txIN--------. live.
  14. Gunther. Emil B.. R.L. Cross. R. A. Wagoner. Eastern North Pacific Tropical Cyclones of 1982. Monthly Weather Review. May 1983. 111. 5. 1080–1102. 10.1175/1520-0493(1983)111<1080:ENPTCO>2.0.CO;2 . 1983MWRv..111.1080G . free.
  15. News: The Weather. May 26, 2013. August 13, 1983. Harlan Daily News. Associated Press. 7.
  16. News: August 18, 1983. Floodwaters from lightning-laced thunderstorms drenching California, Arizona and Nevada.... United Press International. Jeff Wilson. May 29, 2024.
  17. News: Barry S. Surman. Kristina Lindergren. Clouds, Isolated Showers Provide Short Respite From the Heat. Los Angeles Times. September 10, 1984. January 7, 2022. 48. Los Angeles, California. Newspapers.com. January 7, 2022. https://web.archive.org/web/20220107205259/https://www.newspapers.com/clip/92063380/the-los-angeles-times/. live.
  18. News: Bright Skies and Dry Air Expected for the Weekend. July 12, 1985. May 29, 2024. Ted Thackrey, Jr.. Los Angeles Times. May 29, 2024. https://web.archive.org/web/20240529173012/https://www.latimes.com/archives/la-xpm-1985-07-12-me-8880-story.html. live.
  19. Web site: Preliminary Report Hurricane Darby (file 3). 1992-08-09. Max Mayfield. GIF. National Hurricane Center. 2007-12-26. Max Mayfield. 2008-08-25. https://web.archive.org/web/20080825111940/http://www.nhc.noaa.gov/archive/storm_wallets/epacific/ep1992-prelim/darby/prelim03.gif. live.
  20. Web site: Orange County Event Report: Rip Current. National Climatic Data Center. June 3, 2024. June 3, 2024. https://web.archive.org/web/20240603190012/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5616231. live.
  21. Preliminary Report Hurricane Linda. Max Mayfield. October 25, 1997. National Hurricane Center. June 2, 2024. Max Mayfield. February 19, 2024. https://web.archive.org/web/20240219044622/https://www.nhc.noaa.gov/data/tcr/EP141997_Linda.pdf. live.
  22. Web site: National Climatic Data Center. 1998. California Heavy Rainfall Event Report. June 2, 2024. June 2, 2024. https://web.archive.org/web/20240602200715/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5668398. live.
  23. News: Surfers Rejoice in Remnants of Hurricane. September 13, 2000. Los Angeles Times. June 2, 2024. June 2, 2024. https://web.archive.org/web/20240602202121/https://www.latimes.com/archives/la-xpm-2000-sep-13-me-20373-story.html. live.
  24. National Park Service Morning Report. Subject: NPS Morning Report - Thursday, September 14, 2000. United States National Park Service. June 2, 2024.
  25. Stacy Stewart. October 27, 2001. Hurricane Flossie Tropical Cyclone Report. National Hurricane Center. June 2, 2024. June 2, 2024. https://web.archive.org/web/20240602202123/https://www.nhc.noaa.gov/data/tcr/EP072001_Flossie.pdf. live.
  26. Web site: National Centers for Environmental Information . Riverside County Event Report: Thunderstorm Wind . Storm Event Database . National Oceanic and Atmospheric Administration . May 22, 2024 . May 22, 2024 . https://web.archive.org/web/20240522193559/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5269153 . live .
  27. Web site: National Centers for Environmental Information . Orange County Event Report: Rip Current . Storm Event Database . National Oceanic and Atmospheric Administration . June 2, 2024 . June 3, 2024 . https://web.archive.org/web/20240603002501/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5316468 . live .
  28. Web site: National Centers for Environmental Information . Orange County Event Report: Rip Current . Storm Event Database . National Oceanic and Atmospheric Administration . June 2, 2024 . June 3, 2024 . https://web.archive.org/web/20240603002501/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5319336 . live .
  29. Web site: National Centers for Environmental Information . Kern County Event Report: Lightning . Storm Event Database . National Oceanic and Atmospheric Administration . June 2, 2024 . June 3, 2024 . https://web.archive.org/web/20240603021714/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5332498 . live .
  30. Web site: National Centers for Environmental Information . Orange County Event Report: High Surf . Storm Event Database . National Oceanic and Atmospheric Administration . June 2, 2024 . October 31, 2023 . https://web.archive.org/web/20231031213630/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5423857 . live .
  31. Web site: National Centers for Environmental Information . Kern County Event Report: Lightning . Storm Event Database . National Oceanic and Atmospheric Administration . June 2, 2024 . June 3, 2024 . https://web.archive.org/web/20240603025103/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5475464 . live .
  32. News: San Diego Union Tribune. July 30, 2006. Horse fire declared fully contained. June 2, 2024. June 3, 2024. https://web.archive.org/web/20240603023559/https://www.sandiegouniontribune.com/sdut-horse-fire-declared-fully-contained-2006jul30-story.html. live.
  33. Web site: National Centers for Environmental Information . San Diego County Event Report: Flash Flood . Storm Event Database . National Oceanic and Atmospheric Administration . June 3, 2024 . June 3, 2024 . https://web.archive.org/web/20240603165224/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=59440 . live .
  34. News: Dana Hull. The Mercury News. July 11, 2009. July 14, 2009. Rain in July? In the Bay Area?.
  35. Early-Season Heavy Precipitation Event Northern/Central California and Western Nevada October 13 - 14, 2009. June 3, 2024. California Nevada River Forecast Center. June 3, 2024. https://web.archive.org/web/20240603190013/https://www.cnrfc.noaa.gov/storm_summaries/oct2009storm.php. live.
  36. Web site: Jeff Masters. Weather Underground. 2009-10-14. 2009-10-14. Thirsty California soaks up Melor's Deluge. 2009-10-16. https://web.archive.org/web/20091016221845/http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1350. live.
  37. Web site: National Centers for Environmental Information . Kern County Event Report: Dust Storm . Storm Event Database . National Oceanic and Atmospheric Administration . June 3, 2024 . June 3, 2024 . https://web.archive.org/web/20240603165224/https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=59440 . live .
  38. National Climate Report. Significant Events for July 2012. June 3, 2024. National Centers for Environmental Information. August 2012. June 3, 2024. https://web.archive.org/web/20240603213548/https://www.ncei.noaa.gov/access/monitoring/monthly-report/national/201207. live.
  39. News: Tropical storm's last gasp aids California firefighters. Associated Press. Victorville Daily Press. September 5, 2012. June 3, 2024. live. Raquel Maria Dillon. Sue Manning. June 3, 2024. https://web.archive.org/web/20240603213553/https://www.vvdailypress.com/story/news/2012/09/05/rain-aids-battle-against-california/37136677007/.
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  67. National Hurricane Center. February 12, 2024. Brad J. Reinhart. Tropical Cyclone Report. Hurricane Hilary (EP092023) 16-20 August 2023. 13 February 2024. https://web.archive.org/web/20240213034156/https://www.nhc.noaa.gov/data/tcr/EP092023_Hilary.pdf. live.
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